Keratin Coating via Polyphenol Hydrogen Bonding
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Solution Overview
Problem
Current cosmetic products for keratin materials, such as skin, lips, and hair, face challenges in providing long-lasting, water-resistant, and comfortable makeup that is also environmentally friendly and tolerant to mechanical friction, sweat, and cleansing products, while avoiding tackiness and daily application/removal.
Innovation Solution
A process involving the application of a coating agent formed by hydrogen bonding interaction between polyphenols with multiple phenol groups and compounds with functional groups capable of forming hydrogen bonds, which creates a durable and comfortable film on keratin materials, using natural or synthetic compounds that are compatible with various packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional long-lasting makeup products based on synthetic coating polymers or silicone resins are used, then persistence and water resistance are improved, but comfort is worsened due to tackiness
Solution Approach 1:
The patent uses a composite coating system comprising a polymeric film-forming agent and a coating agent that forms a separate layer on top. This multi-layer composite structure combines the adhesion and film-forming properties of the polymer with the water-resistant and comfortable properties of the coating agent, achieving both persistence and comfort without tackiness.
2Duration of action of moving object
If conventional long-lasting makeup products are used, then persistence is improved, but environmental friendliness is worsened due to use of synthetic polymers and organic solvents
Solution Approach 1:
The patent changes the chemical composition parameters of the makeup product by replacing synthetic polymers and organic solvents with naturally-derived coating agents. This substitution maintains the persistent film-forming capability while eliminating harmful synthetic components, achieving both longevity and environmental compatibility.
3Reliability
If conventional long-lasting makeup products are used, then resistance to water and friction is improved, but adaptability is worsened due to incompatibility with certain packaging materials
Solution Approach 1:
The patent achieves broad compatibility by formulating the coating agent with homogeneous, non-reactive natural components that do not interact adversely with different packaging materials. This homogeneous composition maintains water and friction resistance while being compatible with various packaging types including plastics, metals, and glass.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves excellent persistence of cosmetic effects for several days, resistance to mechanical friction, water, and cleansing products, while maintaining comfort and avoiding tackiness, using natural compounds that are environmentally friendly.
Implementation Method 1
a coating agent formed by hydrogen bonding interaction of at least one polyphenol X comprising at least two different phenol groups with at least one compound Y comprising at least two functional groups Gy, which may be identical or different, which are capable of forming at least two hydrogen bonds with said phenol groups of the polyphenol X
Data Source
AI summary
The present invention relates to a process for coating keratin materials, which consists in applying to said materials a coating agent formed by hydrogen bonding interaction of at least one polyphenol X comprising at least two different phenol groups with at least one compound Y including at least two functional groups Gy, which may be identical or different, which are capable of forming at least two hydrogen bonds with said phenol groups of said polyphenol X. More particularly, the process is intended for making up keratin materials.